// SPDX-License-Identifier: GPL-2.0#include <linux/static_call.h>#include <linux/memory.h>#include <asm/text-patching.h>#include <asm/insn.h> void arch_static_call_transform(void *site, void *tramp, void *func, bool tail){	u64 literal;	int ret; 	if (!func)		func = __static_call_return0; 	/* decode the instructions to discover the literal address */	literal = ALIGN_DOWN((u64)tramp + 4, SZ_4K) +		  aarch64_insn_adrp_get_offset(le32_to_cpup(tramp + 4)) +		  8 * aarch64_insn_decode_immediate(AARCH64_INSN_IMM_12,						    le32_to_cpup(tramp + 8)); 	ret = aarch64_insn_write_literal_u64((void *)literal, (u64)func);	WARN_ON_ONCE(ret);}EXPORT_SYMBOL_GPL(arch_static_call_transform);